Nov 7, 2026 - China`s 4,000-Meter-Class Airborne Wind Power System Completes First Urban Test Flight
China`s S4000 Stratosphere Airborne Wind Energy System, the world`s first of its kind designed to operate at altitudes of up to 4,000 meters, successfully completed a test flight in Yueyang City, central China`s Hunan Province, on November 6, marking its first flight test in an urban setting.